Racetech Racing Team presents new formula car
The student association, consisting of eight modules (aerodynamics, propulsion, HV and LV electronics, chassis, management & marketing, frame and simulation) with students from a wide range of courses, presented the new electric racer RT14 at its digital rollout. Due to the corona pandemic, the deveolpment for the new model could not be completed in one year as usual, but was further developed and manufactured over two years. With the RT14, the team is implementing all-wheel drive in the vehicle for the first time in order to remain competitive.
The team reports that the development focus was also on aerodynamics and a reliable vehicle. In addition to the RT14, with which the students plan to compete in this year's international competitions, the so called driverless project was also presented. With the RT11 from the 2016/17 season, the members want to test the new technology and gain experience in order to be able to participate in the competitions with an autonomously driving race car in the future.
Technical highlights of the RT14 model:
- Motors: self-developed wheel hub motors with a power of 37 kW and a torque of 31 Nm
- Power electronics: 2 Lenze-Schmidhauser double inverters 60kW in self-developed investment casting housing
- Driving dynamics control: Torque Vectoring (with yaw rate control), vehicle condition estimation, traction control, range control and power reduction and failsafe control
- Accumulator: total capacity of 6.9kWh, 596V maximum voltage, 284 lithium-polymer cells in a 142s2p interconnection
- Aerodynamics: monocoque shape optimization for maximum side wing area and underbody downforce, wheel covers, bargeboards and fully covered front suspension to control wheel flow and reduce steering angle sensitivity, front wing and linkage optimized for lateral flow
- Wheel carrier: topology-optimized DMLS structure made of high-strength aluminum (front axle)/ investment-cast structure made of AlSI7MG0.6 (rear axle), integrated transmission mount and engine cooling system
- Spring/damper system: Stroke-roll decoupled system with air spring at the roll damper, actuated via pushrods